These will be helpful. This is the seed grid and it is color coded by flower tier. Red is tier 1 flower, blue is tier 2 flower, green is tier 3 flower, and gray is tier 4 flower. Remember, this is the FLOWER not the FOLIAGE.
hope they help. Oh, to use this mod, right-click, save it and rename it to "seed_Grid.png" without the quotes of course. These are what the seeds will look like: